Safe per IP Google limits?

Hi all, does anyone have up-to-date data for how many searches you can perform per IP per time period before getting blocked?

We have a limited scraping need, and spare server resources, so figured this would be a good solution, but would like to know how best to split the work.

I found old posts suggesting around 300 regular (not Google dorks) searches per 24 hours, but have no idea if this is still correct.

Any input greatly appreciated.